SUMMARY This paper presents a study on the effectiveness of different casting sequences to control the cracking in continuous composite bridges. In the first part of the paper, an overview on the modeling aspects of termal shrinkage and tensile creep of the concrete is reported, and a numerical procedure for the structural analysis is described. In the second part, the results of analyses performed on study cases of continuous composite bridge decks are shown. The results obtained by means of continuous slab casting from one end of the bridge to the other are compared with those given by optimised sequential castings and the enhanced ability of the latter to control the cracking tendency during construction has been highlighted.

La fessurazione della soletta durante le fasi costruttive dei ponti composti: efficacia del frazionamento dei getti / Dezi, Luigino; Gara, Fabrizio; Leoni, G.; Ranzi, G.. - 2006:(2006), pp. 91-100. (Intervento presentato al convegno 16° Congresso C.T.E. tenutosi a Parma, Italy nel 9-11 November 2006).

La fessurazione della soletta durante le fasi costruttive dei ponti composti: efficacia del frazionamento dei getti

DEZI, LUIGINO;GARA, Fabrizio;
2006-01-01

Abstract

SUMMARY This paper presents a study on the effectiveness of different casting sequences to control the cracking in continuous composite bridges. In the first part of the paper, an overview on the modeling aspects of termal shrinkage and tensile creep of the concrete is reported, and a numerical procedure for the structural analysis is described. In the second part, the results of analyses performed on study cases of continuous composite bridge decks are shown. The results obtained by means of continuous slab casting from one end of the bridge to the other are compared with those given by optimised sequential castings and the enhanced ability of the latter to control the cracking tendency during construction has been highlighted.
2006
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/63586
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